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Cummins progressing with lightweight downsized T2B2 diesel for pickup; 40% improvement in fuel economy over gasoline V8

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In 2013, the Cummins-led team demonstrated a Tier 2 Bin 5 version of the engine on the dyno, and then on a vehicle, while development of the Tier 2 Bin 2 engine started. Taking learnings from LTD and LDECC programs to utilize PCCI (pre-mixed charge compression ignition) and high charge flow operation. Weigert, E., Fuels Lubr.

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Ricardo to display functional integration prototype of ADEPT 48V “intelligent electrification” diesel

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The ADEPT project was launched in 2013 to demonstrate the potential for 48V-based intelligent electrification to deliver full hybrid-scale fuel efficiency from a highly cost-effective package. An effective limitation on downsizing, however, is the delivery of acceptable driveability characteristics and launch performance.

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Ford / AVL study concludes mid-level ethanol blend attractive as a long-term future fuel for use in optimized engines in US

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The team presented a paper on their work at the 2013 SAE World Congress in Detroit. In a direct injection engine, they noted, the cooling of the charge and consequent knock relief provided by the evaporation of the fuel is proportional to the fuel flow per unit mass of air. Downsizing/downspeeding. Heat of vaporization (HoV).

Engine 253
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FEV’s two-stage VCR system; 5-7% increase in fuel economy using variable length conrods

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downsized, turbocharged) gasoline engine, as operating an engine with higher compression ratios at low load can increase fuel economy compared to operating an engine with fixed compression ratio. Use of a variable compression ratio (VCR) could be one technology approach to reducing fuel consumption in highly boosted (e.g., Kleeberg, H.,

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Nissan adding new 2.0L turbo to Skyline lineup in Japan

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In November 2013, Nissan introduced the new Skyline with Nissan’s novel one-motor two-clutch hybrid system in every grade. The new turbocharged gasoline engine achieves a superior level of engine performance with maximum power output of 155kW (211ps) while improving fuel economy with its downsized displacement. Earlier post.)

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Audi using supplementary port fuel injection to address particulates from gasoline direct injection

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GDI technology provides fuel efficiency benefits from charge air cooling, more facile turbocharging, and the downsizing that these permit. Particle number vs. particle mass for various LDV engine technologies. Source: MECA, Ford Motor Company. Click to enlarge. Resources. Matti Maricq, Joseph J.

Gasoline 304
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Team from GM, Ford, FCA reviews how to calculate engine efficiency benefits of high octane fuels

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Knock and fuel octane rating are becoming increasingly important due to many powertrain design trends including downsizing, downspeeding, cylinder deactivation, and hybridization. … The vast majority (87%) of gasoline sold in the US in 2013 was regular grade, with 10% premium and 3% midgrade. In their study, Leone et al.

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